Ingredients:
4 ounces  sweet chocolate
1/4 cup margarine
1/4 cup sugar
2 eggs, slightly beaten
1 teaspoon vanilla
1/2 cup flour
1/2 cup chopped nuts
.
Cream Cheese Topping:
4 ounces cream cheese, room temperature
1/4 cup sugar
1 egg
1 tablespoon flour

Melt chocolate and margarine over very low heat. Stir sugar into chocolate mixture; add eggs and vanilla stir until completely mixed. Mix in flour until well blended. Stir in nuts. Spread in greased and floured 8-inch square pan.
topping. Mix cream cheese, sugar, egg and flour until smooth. Spoon over brownie batter mixture in pan, swirl with knife to make a "marble" pattern. Bake at 350� for about 30 minutes or until wooden pick inserted in center comes out almost clean.